Which of the following statements best describes the mechanism by which testosterone functions inside a cell?
A) It acts as a signal receptor that activates tyrosine kinases.
B) It binds with a receptor protein that enters the nucleus and activates expression of specific genes.
C) It acts as a steroid signal receptor that activates ion channel proteins in the plasma membrane.
D) It coordinates a phosphorylation cascade that reduces spermatogenesis.

Question

Quizplus · Accepted Answer

Testosterone is a steroid hormone that diffuses through the cell membrane and binds to specific receptor proteins. These hormone-receptor complexes then enter the nucleus and activate or repress the transcription of target genes, influencing various cellular functions.

Which of the Following Statements Best Describes the Mechanism by Which